131851604 has 12 divisors (see below), whose sum is σ = 232075284. Its totient is φ = 65544384.

The previous prime is 131851597. The next prime is 131851627. The reversal of 131851604 is 406158131.

It can be written as a sum of positive squares in 2 ways, for example, as 126607504 + 5244100 = 11252^2 + 2290^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94577 + ... + 95960.

It is an arithmetic number, because the mean of its divisors is an integer number (19339607).

Almost surely, 2^131851604 is an apocalyptic number.

It is an amenable number.

131851604 is a deficient number, since it is larger than the sum of its proper divisors (100223680).

131851604 is a wasteful number, since it uses less digits than its factorization.

131851604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190714 (or 190712 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 131851604 is about 11482.6653700262. The cubic root of 131851604 is about 508.9734625138.

The spelling of 131851604 in words is "one hundred thirty-one million, eight hundred fifty-one thousand, six hundred four".